Earth Juice Bloom Master – 20 lb

Earth Juice Bloom Master (0-50-30) is a water-soluble, high-phosphorus and potassium fertilizer in a 20 lb bag. It is formulated to enhance flower set and fruit swelling during the bloom stage, and can also be used to establish root systems in young plants.

Earth Juice Bloom Master Specifications

The following table summarizes the key product specifications sourced from manufacturer documentation and the canonical product data for this item.

Specification	Value
Brand	Earth Juice
Product Line	Bloom Master (Seablast)
NPK Analysis	0-50-30
Formulation Type	Water-soluble powder
Pack Size	20 lb
Net Weight	Approx. 15.9989 lb
Phosphorus (P2O5)	50%
Potassium (K2O)	30%

Why Choose Earth Juice Bloom Master

Earth Juice Bloom Master is built around a 0-50-30 ratio that delivers very high levels of phosphorus and potassium with zero added nitrogen. This profile is deliberately nitrogen-free: during the transition to bloom and through the fruiting phase, excess nitrogen can delay flower set and push continued vegetative growth. By removing nitrogen from the formula entirely, Bloom Master lets growers control their N source separately while supplying the P and K the plant actually needs at this stage.

The water-soluble powder format dissolves cleanly in your reservoir or foliar tank, making it straightforward to dial into a multi-part feed program. There is no sediment to contend with and no risk of clumping in properly stored product. The 20 lb bag size is appropriate for commercial production or for smaller operations that want to reduce the frequency of reorders.

• Zero-nitrogen bloom formula: The 0-50-30 NPK allows precise nutrition during flowering without risking nitrogen-driven vegetative stretch late in the cycle.
• High-phosphorus support for flower set: The 50% P₂O₅ level addresses the plant’s elevated phosphorus demand during bud initiation and flower development.
• Potassium for cell strength and fruit fill: The 30% K₂O content supports cell wall integrity, osmotic regulation, and carbohydrate transport — all relevant to fruit swelling and final weight.
• Dual-phase utility: While designed for bloom, the formula can also be used during rooting and early establishment of young plants where a phosphorus-forward feed is beneficial.
• Water-soluble powder: Fully soluble formulation integrates easily into existing fertigation schedules without residue or compatibility issues typical of liquid concentrates.

Best Uses for Earth Juice Bloom Master

Bloom Master’s 0-50-30 profile makes it a targeted tool rather than an all-in-one feed. The following applications are supported by the product description and its nutrient composition.

• Bloom-stage fertilization: Apply during the flowering phase of fruiting crops (tomatoes, peppers, cucumbers, squash) and flowering ornamentals to enhance flower set and support fruit development.
• Root establishment in young transplants: A dilute application of a high-phosphorus formula encourages early root branching and establishment in seedlings and cuttings transitioning to their final growing medium.
• Hydroponic and recirculating systems: The water-soluble powder is compatible with drip irrigation, NFT, ebb and flow, and deep water culture systems where dissolved nutrients are delivered directly to the root zone.
• Coco coir and soilless media: Works well in inert and near-inert media where the grower controls all nutrient inputs and needs a clean P-K top-up without additional nitrogen.
• Supplemental P-K boost in multi-part programs: Can be used alongside a base nutrient line to increase phosphorus and potassium levels at specific growth stages without disturbing the nitrogen component of the feed program. For example, growers using a root-zone inoculant like Heavy 16 Roots in their reservoir can add Bloom Master separately to hit the target P-K levels during flowering.
• Transitional feeding: Useful during the switch from vegetative to reproductive growth when growers want to ramp up P and K while holding or reducing nitrogen levels.

Dosing Guidelines

Earth Juice Bloom Master is a concentrated water-soluble fertilizer. The manufacturer’s published description does not include a specific dose rate per gallon for this product. The following are general guidelines consistent with high-concentration soluble fertilizers of this type; verify against your target EC and adjust accordingly.

• Starting point: Begin with a low dose (1/4 to 1/2 of the recommended rate) and monitor EC and plant response before increasing. Because the formula contains no nitrogen, it will not significantly affect N readings, making EC monitoring the primary guide for P-K uptake.
• pH range: Mix into water adjusted to pH 5.8–6.5 for hydroponic systems, or 6.0–7.0 for coco and soil. High-phosphorus fertilizers can interact with calcium and magnesium at improper pH levels, leading to nutrient lockout.
• Reservoir mixing: Dissolve the measured powder in a small volume of warm water first, then add to the reservoir while the pump is running to ensure thorough distribution.
• Pairing with base nutrients: Because Bloom Master contains zero nitrogen, it must be used alongside a base nutrient that provides N. Growers using a dedicated rooting or bloom additive such as Earth Juice Hi-Brix Molasses may find that pairing the two addresses both the energy and mineral demands of the bloom phase.
• Storage: Keep sealed in a cool, dry location. Moisture can cause clumping or degradation in water-soluble powder fertilizers.

Sources & Further Reading